U.N. chemical weapons experts prepare before collecting samples from one of the sites of an alleged chemical weapons attack in Damascus' suburb of Zamalka in this August 29, 2013 file photo. A report ... more 
U.N. chemical weapons experts prepare before collecting samples from one of the sites of an alleged chemical weapons attack in Damascus' suburb of Zamalka in this August 29, 2013 file photo. A report by U.N. chemical weapons experts will likely confirm that poison gas was used in an August 21 attack on Damascus suburbs that killed hundreds of people, U.N. Secretary-General Ban Ki-moon said on September 13, 2013. France's U.N. ambassador, Gerard Araud, told reporters that September 16, 2013 is the tentative date for Ban to present Sellstrom's report to the Security Council and other U.N. member states. REUTERS/Bassam Khabieh/Files (SYRIA - Tags: POLITICS CIVIL UNREST CONFLICT HEALTH) less 
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Reuters | Photo By STRINGER / REUTERS
Mon, Sep 16, 2013 3:40 AM EDT